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Finding the Fourth Proportional to 1,261,071.79, 1,739,824.32 and 970,772.14

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Solution

The fourth proportional to 1,261,071.79, 1,739,824.32 and 970,772.14 is: 1,339,315.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,071.79 : 1,739,824.32 = 970,772.14 : x
  2. Step 2: Convert to fraction form
    1,261,071.79/1,739,824.32 = 970,772.14/x
  3. Step 3: Cross multiply
    1,261,071.79x = 1,739,824.32 × 970,772.14
  4. Step 4: Simplify right side
    1,261,071.79x = 1,688,972,978,350.44
  5. Step 5: Solve for x
    x = 1,688,972,978,350.44/1,261,071.79
  6. Step 6: Final answer
    x = 1,339,315.49

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.